Triple-digit temperatures headed to Southern California. When will heat spike?

SAN DIEGO (FOX 5/KUSI) -- After a cooler than normal start to summer, temperatures are finally heating up as we get the month of August started.

High pressure to our east will be strengthening and expending west from New Mexico to Southern California and, as a result, will bump afternoon temperatures five to 10 degrees above average. 

Heat advisories go into effect Wednesday for the valleys and mountains, which will feel max temperatures 90 to 100 degrees with an extreme heat warning bringing temperatures up to 118 degrees to the desert communities. 

Thursday seems like it will be the hottest day of the week with beaches feeling close to 80 degrees, mid-90s for the valleys and mountains, and around 115 degrees for Borrego Springs. We are keeping an eye on Indio, Palm Springs, Thermal and Borrego Springs to tie or potentially break daily temperature records during this heat wave. 

Since we have not felt summer heat like this in a while, there is a bit of an increased heat risk, especially for East County residents.

Most areas except the immediate coast will be categorized as having a moderate heat risk with deserts leveled up to a dangerous heat risk level. 

Make sure you are drinking plenty of fluids, wearing light and loose-fit clothing, exercising earlier or later in the day to avoid peak hot temperatures, and avoiding long periods of direct sun exposure. 

A few coastal clouds will develop each evening, but will be patchy in coverage and look to clear pretty quickly in the morning hours. 

In addition, smoke from the Gifford Fire burning in San Luis Obispo and Santa Barbara Counties continues to drift into our air so expect hazy conditions the next few days. Air IQ has valleys and some costal locations at a moderate air quality readings.